Table 1. Demographics for preeclampsia and gestational hypertension cases and normotensive control groups stratified by SDB status.
| PE (n = 17) | GH (n = 24) | Controls (n = 44) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| SDB (n = 7) | No SDB (n = 10) | p | SDB (n = 15) | No SDB (n = 9) | p | SDB (n = 17) | No SDB (n = 27) | P | |
| Age (years) | 31.0 (30.0, 34.0) | 33.5 (26.0, 35.5) | .38 | 36.0 (29.0, 38.0) | 33.0 (29.0, 34.0) | .28 | 33.0 (31.5, 36.0) | 33.0 (29.0, 38.0) | .95 |
| Nulliparous | 6 (85.7%) | 7 (70.0%) | .60 | 8 (53.3%) | 5 (55.6%) | 1.0 | 10 (58.8%) | 13 (48.1%) | .55 |
| GDM | 3 (41.2%) | 3 (30.0%) | .64 | 2 (13.3%) | 0 (0.0%) | .51 | 4 (23.5%) | 4 (14.8%) | .69 |
| BMI first appt* | 32.9 (26.5, 40.3) | 27.0 (25.4, 29.4) | .24 | 33.9 (30.5, 36.3) | 31.0 (28.1, 33.0) | .16 | 35.1 (27.4, 38.5) | 29.5 (27.7, 36.1) | .47 |
| Gestational weight gain (kg)* | 11.0 (5.3, 14.0) | 7.5 (3.0, 10.4) | .49 | 11.0 (9.0, 16.5) | 12.0 (5.0, 12.8) | .49 | 10.0 (6.0, 12.6) | 9.4 (5.5, 12.4) | .72 |
| BMI PSG | 38.3 (29.4, 46.3) | 31.0 (30.1, 31.8) | .31 | 38.0 (36.4, 40.2) | 35.3 (32.3, 38.4) | .11 | 38.2 (31.6, 42.0) | 35.6 (31.2, 37.5) | .28 |
| Gestation PSG (weeks) | 29.6 (27.6, 34.4) | 32.4 (29.1, 34.0) | .41 | 35.9 (34.4, 36.7) | 35.9 (32.6, 37.6) | .74 | 33.3 (32.0, 34.9) | 34.0 (30.7, 34.6) | .98 |
| RDI/hr | 16.8 (12.3, 108.6) | 1.9 (1.5, 3.0) | < .001 | 12.5 (7.2, 26.1) | 3.0 (1.1, 3.2) | < .001 | 8.8 (7.2, 27.3) | 2.9 (1.5, 4.0) | < .001 |
| ODI ≥ 3% overall | 6.0 (0.4, 109.7) | 0.7 (0.2, 1.4) | .055 | 5.9 (3.2, 35.9) | 1.3 (0.0, 2.9) | .002 | 5.4 (0.7, 27.1) | 1.0 (0.2, 2.4) | .007 |
Values given as Mdn (IQR) or n (%). PE = preeclampsia, GH = gestational hypertension, SDB = sleep-disordered breathing, GDM = gestational diabetes mellitus, BMI = body mass index, kg/m2, PSG = polysomnography, RDI = respiratory disturbance index, ODI = oxygen desaturation index.
*The BMI value measured at the first antenatal appointment was taken at a mean of 15.1 ± 2.6 weeks gestation, with gestational weight gain taken from booking until PSG gestation.